2018 GMC Sierra 1500
Mileage
100,031
Service Date
3/5/2025
Services Performed
- Test drove vehicle- electric power steering system seemed to work as designed. Scanned all control modules for relevant faults. Found C0800:03, "Control module power circuit low voltage" & U0073:00, "Control module communication high speed CAN bus off" stored in Power Steering Control Module. Performed resistive test of battery- PASS. Noted corrosion preventive coating recently applied to both battery terminals appeared to have seeped through gaps between terminal and battery post. Removed terminals from battery and verified corrosion protection chemical had indeed seeped in between post and terminal, insulating terminal from post slightly. This technician has experienced this type of chemical causing electrical malfunctions such as no-crank conditions in the past. General Motors Technical Service Bulletin #18-NA-161 indicated this fault is most commonly caused by loose or corroded battery terminals and/or cable connections. Cleaned chemical corrosion inhibitor from both positive and negative terminals and posts. Enhanced connection with dielectric compound during re-assembly. This type battery, cable, and terminal design very rarely results in excessive corrosion of terminals, so additional chemical corrosion inhibitors are not necessary. Cleared faults and test drove vehicle. Should warning message return in near future, please return vehicle as soon as possible for further diagnosis.
- Performed four wheel alignment service. Performed all necessary resets and calibrations.
SHANDIE H. gave our service a 5 star review on 3/6/2025
